A SIM Card is one of the biggest steps in technology evolution. It has enabled people to achieve communication with others over a medium that is limitless. With the invention of the SIM card, mankind has now been able to unlock the wonders of mobile communication in ways that were unimaginable a few decades ago.
Today, with a mobile phone and a SIM card (physical or virtual), the power of the internet services and a plethora of other features can be utilized.
In Australia, SIM Cards have both the option of being used physically on a cell phone, and some network providers now even provide an e-SIM that lets them use multiple devices and plans simultaneously. Using a SIM card is also extremely easy and with the vast availability of network services, one can easily purchase an Australia SIM card with ease anywhere on the continent.
Uses of a SIM Card
A SIM is abbreviated from Subscriber Identity Module – a technology that marks every single subscriber that can be identified on a network with a unique microchip – just like the IP address on a computer in a network. SIM cards store important information on them that can be helpful in two ways:
To Connect and Identify itself on a Network
One of the primary applications of SIM cards is to connect to a network. This is done using information that is embedded in a microchip that can connect to the network and establish as a subscriber on the network.
This data is permanent and cannot be erased or altered. Every mobile phone that needs to stay on a network to make voice calls accesses the internet, or for any other network-based services such as roaming needs to have a SIM card for this purpose.
Important details that can be transported
This is another feature of a SIM Card – a SIM card will let the user save some important information to it so that it can be used on different devices without actually having to lose data. Every SIM card comes with a small memory limited only to kilobytes of data such as contacts, important service numbers, and important text messages.
Storing Important Contacts on SIM
The SIM card has limited space ranging from 8KB to 256KB. This pace is provided by the network to store important information such as Network Identifiers, Operator Emergency Numbers, and Value Added Services that a user may require on the go.
It helps the user to carry important contacts, identify and connect to various networks and dial important emergency numbers while the SIM is not in the Home network and is roaming. Most network providers would provide the SIM with pre-saved service numbers such as Ambulance, Fire, Police, Emergency services, etc.
Apart from this, the user may choose to save a few contacts on the SIM card such as important phone numbers, emails, and some text messages with important information. This service helps users to safely carry information on their SIM as it cannot be easily erased unless the subscriber wants to do so. The user can safely switch devices when roaming with some capability of stored data.
To save an important contact, all one needs to do is simply choose the SIM option from the contact saving dialogue box. A user can store an average of 200 such contacts.